Table 4 The comparison of the MBL and clinical parameters among groups at the 2-year follow-up controlling the restoration type as a covariate

Mesial MBL in millimeters

0.63 ± 0.02^c

0.72 ± 0.02

0.58 ± 0.03^d

Distal MBL in millimeters

0.60 ± 0.02^c

0.69 ± 0.03

0.61 ± 0.03

Mesial MBL in percentage

6.04 ± 0.22

6.83 ± 0.24

5.47 ± 0.28^d

Distal MBL in percentage

5.81 ± 0.25

6.58 ± 0.28

5.66 ± 0.32

BOP (+)

44 (83.0%)

36 (81.8%)

27 (84.3%)

PD (mm)

1.30 ± 0.04

1.38 ± 0.04

1.27 ± 0.05